Table 3.

Cyclocondensation reactions between benzosuberone (1) and arylhydrazonals 2a–j using Q-tube.^a

Entry	Reactants	Ar1	Ar2	Product	Yield (%)
1	1 + 2a	4-Cl-Ph	4-Cl-Ph		98
2	1 + 2b	Ph	2-F-5-NO2-Ph		94
3	1+ 2c	4-Cl-Ph	2-Cl-5-NO2-Ph		99
4	1 + 2d	4-Br-Ph	2-Cl-5-NO2-Ph		96
5	1 + 2e	4-Cl-Ph	2-F-5-NO2-Ph		97
6	1 + 2f	4-NO2-Ph	2-F-5-NO2-Ph		95
7	1 + 2g	4-Br-Ph	2-F-5-NO2-Ph		96
8	1 + 2h	4-Br-Ph	2,4-diF-Ph		99
9	1+ 2i	4-MeO-Ph	2-F-5-NO2-Ph		91
10	1 + 2j	C4H3S	2-F-5-NO2-Ph		93

^aReaction conditions: a mixture of benzosuberone (1) (5 mmol), arylhydrazonopropanal 2a–j (5 mmol), and NH₄OAc (10 mmol) in AcOH (10 ml) was charged in the Q-tube reactor's 35 ml glass tube and heated for 30 min at 165 °C (oil bath).